Nope, its a pish poor port of Hardware Online Arena for PS2. Has all the online features ripped out and takes roughly 90mins to complete according to reviews.
So you haven't played it then and you believe every review you read, so how can you comment, shame on you.
No online for obvious reasons, but is multiplayer so essentially the same. It's designed to be multiplayer and not really a single player, but this has been added as an extra. You can play multiplayer with game share so not everyone needs a copy of the game. It's a good solid multiplayer shoot and drive around. If you liked Hardware Online you'll like this.